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added a note to avoid f-strings in logging (#25081)

* added a note to avoid f-strings in logging------Co-authored-by: Jody Klymak <jklymak@gmail.com>

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`@@ -455,6 +455,12 @@ Then they will receive messages like`
`455`	`455`	`DEBUG:matplotlib.yourmodulename:Here is some information`
`456`	`456`	`DEBUG:matplotlib.yourmodulename:Here is some more detailed information`
`457`	`457`
	`458`	+Avoid using pre-computed strings (``f-strings``, ``str.format``,etc.) for logging because of security and
	`459`	+performance issues, and because they interfere with style handlers. For example, use ``_log.error('hello %s', 'world')`` rather than
	`460`	+``_log.error('hello {}'.format('world'))`` or ``_log.error(f'hello {s}')``.
	`461`	`+`
	`462`	`+`
	`463`	`+`
`458`	`464`	`Which logging level to use?`
`459`	`465`	`~~~~~~~~~~~~~~~~~~~~~~~~~~~`
`460`	`466`

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